gorilla glue. we've been working on it for a couple of weeks. >> best of luck and happy flying. actually, when i found out about this assignment this morning, i decided to whip something else up myself. i had spare plywood. since we're in san francisco, this, this is the ultimate ride right here. you're looking at solid wood framed trolly, san francisco trolly. weight of roughly 300 pounds. it has wings. it should fly. i've got my wing men here who are going to -- >> should. should fly. give me a little ride. we're going to see -- i just want to take back as we get into launching position, what do you think i can do? what's your guess on distance? >> i'm predicting a bad finish, bob, to be honest. >> yeah. >> the bad news is, it's only about five feet deep. the good news is, i've got a helmet on. >> i'm going to hand my mic off. i don't think they want me to throw this in. >> bob, we are prepared.